# ifndef _EncryptCallBacker_H_
# define _EncryptCallBacker_H_
#include <iostream>
#include <string>
using namespace std;
class EncryptCallBacker{
public:
	virtual string encrypt(const string& src,const string &key)=0;
	virtual string decrypt(const string& d_src,const string &key,int len)=0;
};
# endif